He kept yawning in class this morning. That is _____ he stayed up late doing his homework last night.

A. why B. how

C. because D. whether

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When he was there, he ________ go to that coffee shop at the corner after work every day.

A．would B．should

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I’d appreciate ______ if you can turn the radio down, for my baby is sleeping.

A. it B. that

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It's said that the power plant is now large as what it was.

A．twice as B． as twice

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It's surprising that your brother Russian so quickly－h(huán)e hasn't lived there very long.

A．picked up B．looked up

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I still remember _______ the grand school used to be a abandoned airport two years ago.

A. how B. where

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She is very dear to us. We have been prepared to do it takes to save her life.

A. whichever B. however

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I just wonder ________ that makes you so excited.

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